I have a 92 S10 Blazer,4.3L W/CPU. I seen a lot of the fuel lines that go into the plenum spring leaks & also the (spider) inside give problems. Im not having problem yet(KOW),but know I will eventually. Where is best place to get these items & is there any alteranative such as switching over to throttle body!? I know these items are pricey,I know a switch will be pricey to but I plan to keep this vehicle a long time. Any help will be appreciated.
ps, wish I had gotten here earlier,,could have saved a lot of people some $$ on the hood hinge rattle!!!

Bought this stuff for mine at www.gmpartsdirect.com Shipping was way up there but the bottom line was still much cheaper than anywhere else. Have seen the injector on Ebay for much less, a marine application, same part number though. Different pricing schedule or something?

CPI injector = Autozone
Nut Kit and upper plenum gasket = dealer

CPI injector = Autozone
Nut Kit and upper plenum gasket = dealer

Hey, I thought the gasket at AZ and Advance as well as possible others was a good one. Does it matter, Felpro is what I was going to get...

Should be fine. I think it is reusable too.

Heh, thought I would post this up here since my hunt for CPI parts has been long and hard.

CPI Injector Assembly (Poppet valves, regulator, injector (all inclusive) GM Part #17113673. AC/Delco Part #2171431 (Dealership price $495.14)

Nut Kit (Including brackets, O-rings, again all inclusive) GM Part #17112705 I was unable to locate an AC/Delco part number for cross reference. (Dealership price $82.02)

I have found the parts to rebuild my leaking, vintage CPI in my '95 Blazomatic at a parts store that the dealership recommened. They had the above parts IN STOCK for $426.53 (Including tax) for the CPI Injector Assembly and the Nut Kit. Going to be swapping this out as soon as a nice, chunky bonus for a project completed before deadline comes my way in another week. (Payroll's slow to get their butts in gear)

Should be fine. I think it is reusable too.
Thats a lot of dough!!!!

Thats a lot of dough!!!!

My prices are:

Nut kit from dealer = $82.00, Dealer only part
CPI from AZ = $278.99, compare to dealer 346.60 quoted
Gasket from AZ = 7.99, didn't get other quotes

Anyone try rockauto for the parts?

Rockauto had some of the better prices. However, I wanted someone I can throttle face to face if the parts break within their 1 year warranty. Can;t do that through mail order! And it would appear that the Nut Kit is no longer a dealer only item. The parts store that the dealership gets their parts from stocks the part, whereas the dealership didn't! *laugh* I spend $70 more picking it up locally, but nothing beats beating a counter-monkey with a wrench if it's junk in a box.

True but if you get the ac delco parts from rockauto it should be good to go

http://www.babcox.com/editorial/us/us30098.htm

Anyone ever come across that link?

I was looking for a picture for LT even though it probally doesnt exist and i found that

What a FABULOUS post!

Thanks so much.

Thanks for the compliment i just thought i put it out there seeing as it is such a big problem on those trucks w cpi and i was impressed with all the detail the article went into on fuel pressures and stuff

Great read! I loved it.

Its gonna be good to use when people start to debate that there is enough fuel pressure to start and then you can whip it out.

http://www.asashop.org/autoinc/feb2000/techtotech.htm

I know it has alot of the same stuff as before link it has better pictures as to what leaks and what to check after and stuff and better quality pictures.


http://www.samscars.com/mage7.html

Really backs up what blazerlt's knowledge on the subject with even better pictures.


Read through those links and it should leave you with the sense of thats what wrong i need to fix it

anyone tried these folks parts??? Thanks for all the info!
Bill P.

anyone tried these folks parts??? Thanks for all the info!
Bill P.



http://www.lindertech.com/reconinj.htm

http://www.lindertech.com/reconinj.htm
4.3 CPI Service Kit
Part# CPI-200
LTS introduces the General Motors 4.3L service kit. “Buy it all at once” This kit is just what you need for the 1991-95 4.3L “W” engines when you have diagnosed them as needing a new CPI unit. It includes an LTS reconditioned CPI unit with upgraded regulator so you don’t have any more worries about a leaking fuel regulator, the fuel supply & return lines which will put your mind at ease when removing those brittle plastic lines from the old unit, an upper plenum gasket and an EGR screen-type gasket to take care of the common problem of carbon getting stuck in the EGR valve. This is a 10% savings over purchasing these parts separately. Keep in mind, there is a $50.00 core charge for the

4.3 CPI Service Kit
Part# CPI-200
LTS introduces the General Motors 4.3L service kit. “Buy it all at once” This kit is just what you need for the 1991-95 4.3L “W” engines when you have diagnosed them as needing a new CPI unit. It includes an LTS reconditioned CPI unit with upgraded regulator so you don’t have any more worries about a leaking fuel regulator, the fuel supply & return lines which will put your mind at ease when removing those brittle plastic lines from the old unit, an upper plenum gasket and an EGR screen-type gasket to take care of the common problem of carbon getting stuck in the EGR valve. This is a 10% savings over purchasing these parts separately. Keep in mind, there is a $50.00 core charge for the

Best to get a new unit, which is only a bit more.

I picked up a "kit" (all NEW AC Delco parts) that included:

-CPI Spider with factory redesigned regulator
-Nut Kit + O Rings
-All Gaskets
-Tube of RTV

Total cost with shipping from Chicago to Calgary was $400 CDN. Found it on ebay.

what was the link to this auction?

I picked up a "kit" (all NEW AC Delco parts) that included:

-CPI Spider with factory redesigned regulator
-Nut Kit + O Rings
-All Gaskets
-Tube of RTV

Total cost with shipping from Chicago to Calgary was $400 CDN. Found it on ebay.
How could you tell they were (NEW) ac-delco parts? If you dont mind me asking!!!
Thanks,
Bill P.